High shear enrichment improves the performance of the anodophilic microbial consortium in a microbial fuel cell

Pham, Hai The, Boon, Nico, Aelterman, Peter, Clauwaert, Peter, De Schamphelaire, Liesje, van Oostveldt, Patrick, Verbeken, Kim, Rabaey, Korneel and Verstraete, Willy (2008) High shear enrichment improves the performance of the anodophilic microbial consortium in a microbial fuel cell. Microbial Biotechnology, 1 6: 487-496. doi:10.1111/j.1751-7915.2008.00049.x


Author Pham, Hai The
Boon, Nico
Aelterman, Peter
Clauwaert, Peter
De Schamphelaire, Liesje
van Oostveldt, Patrick
Verbeken, Kim
Rabaey, Korneel
Verstraete, Willy
Title High shear enrichment improves the performance of the anodophilic microbial consortium in a microbial fuel cell
Journal name Microbial Biotechnology   Check publisher's open access policy
ISSN 1751-7915
Publication date 2008-11-01
Sub-type Article (original research)
DOI 10.1111/j.1751-7915.2008.00049.x
Open Access Status DOI
Volume 1
Issue 6
Start page 487
End page 496
Total pages 10
Place of publication Chichester, West Sussex, United Kingdom
Publisher Wiley-Blackwell Publishing
Language eng
Formatted abstract
In many microbial bioreactors, high shear rates result in strong attachment of microbes and dense biofilms. In this study, high shear rates were applied to enrich an anodophilic microbial consortium in a microbial fuel cell (MFC). Enrichment at a shear rate of about 120 s-1 resulted in the production of a current and power output two to three times higher than those in the case of low shear rates (around 0.3 s-1). Biomass and biofilm analyses showed that the anodic biofilm from the MFC enriched under high shear rate conditions, in comparison with that under low shear rate conditions, had a doubled average thickness and the biomass density increased with a factor 5. The microbial community of the former, as analysed by DGGE, was significantly different from that of the latter. The results showed that enrichment by applying high shear rates in an MFC can result in a specific electrochemically active biofilm that is thicker and denser and attaches better, and hence has a better performance.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Advanced Water Management Centre Publications
 
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